Log-turner.



PATENTED APR. 17, 1906.

S. J. BENS.v LOG TURNER.

APPLICATION FILED MAR.22,1905.

Q 7 Wm.

- running upon tracks.

UNITED STATES PATENT oFFion.

SAMUEL J. BENS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO REGINALD L. MUIR, OF

LOG-TURNER.

Specification of Letters Patent.

Patented April 17, 1906.

Application filed March 22,1905. Serial No. 251,413.

To aZZ whom it may concern:

Be it known that I, SAMUEL J. BENS, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful 1m rovements in Log- Turners, of which the fol owing is a specification.

My invention relates to log-turning devices; and my object is to provide a simple mechanical device for the purpose which will be under perfect control at all times as to adjustment and operation.

An embodiment of my invention is shown in the accompanying drawings.

Figure 1 is a side elevation, partly in section of the apparatus. Fig. 2 is a plan view. Fig. 3 is an end elevation. Fig. 4 is an end view of the shaft which supports the turningquadrant. Fig. 5 is a side elevation of the same. Fig. 6 is a detail section to show stops for locking the quadrant in one direction.

The bed-frame of the turning device, and which forms part of the log-carriage, is represented at 1. It has a longitudinally-slotted top 2 and side pieces 3. The frame rests upon the timbers 4 of the log-carriage, which are supported by any number of wheels 5,

Secured to the bedframe is a steam-cylinder 6, adapted to re ceive and transmit steam pressure and whose piston-rod is connected to the longitudinal rack 7, which slides in guides in the side pieces of the frame and below the slot in its top. The top of the bed-frame is formed with dovetail grooves 8, extending longitudinally at each side of the slot, and with angularly-serrated or ratchet-toothed surfaces 9 parallel to and outside of said grooves. The spaces between the ratchet-teeth are shallower than those between the teeth of the rack 7.

Two standards 11 11 are provided with dovetail feet 12, which engage with and are adjustable in the guide-grooves 8, as shown in Fig. 3. These standards are preferably connected by a yoke 13, which strengthens their structure and compels their simultaneous movement and also acts as a stop under certain circumstances hereinafter described.

A shaft 14 is mounted in bearings in the upper ends of the standards 11, to which shaft is secured between the standards an eccentric 15. Upon this eccentric is loosely hung the toothed quadrant 16, which normally engages the rack 7. Forward of the rack and secured to the bottom of the quadrant is the projecting foot or turning-dog 17, which lies in or about in the plane of the slot in the bed-frame. The shaft 14 extends beyond its bearings on both sides and has one squared end to receive a lever 18. On the projecting ends of the shaft are eccentrics 19, from which hang loosely the dogs 21 for looking the standards 11 to the top plate and which have beveled lower ends to fit the ratchet-teeth 9 in the top plate. These dogs pass through holes in the base of the standards 11, which act as guides and hold such dogs in vertical position. If the lever be thrown partially, the dogs will rise free of the teeth 9 but the quadrant will remain in engagement with the rack until the lever has been thrown still farther and lifts the quadrant out of engagement.

The machine is shown ready for operation in Fig. 1. The quadrant is in en agement with the rack, and the dogs 21 are ocked in the ratchets. The foot 17 lies under the edge of the log. Steam is admitted to the cylinder, and the rack is moved forward, throwing the quadrant up and forward, so that the foot turns the log over upon thelogdeck, as indicated in dotted lines. The turned log is then pushed back in the usual way upon the carriage and the sawing continued until it becomes necessary to turn the log again. At this time there is a space between the log-turner and the log, owing to the saw having removed more or less lumber. The operator now raises the dogs 21 and applies steam, so that the log-turner is pushed forward with its turning-foot under the log. Stops 22, projecting from the quadrant, rise behind corresponding stops 23 from the standards, so as to lock the quadrant and prevent the latter from swinging forwardly and upwardly as the standards move forward toward the log. The operator then lifts the quadrant out of gear and reverses the steam on the cylinder, so as to withdraw the rack With the piston in readiness for the turning stroke. He then throws back the lever 18 so as to en age both the quadrant and the dogs 21 wit the top plate and is then ready to turn the log. When a new log is to be supplied, the quadrant and dogs 21 are disengaged, leaving the turner free, so that the new log can push it back to its proper position. The quadrant and dogs are then reengaged with the rack.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a log-turner, a frame having a longitudinal slot, a rack movable in the frame, standards adjustably mounted in the frame and projecting vertically above said slot, a toothed quadrant adapted to engage said rack, and journaled in said standards, and a turning-shoe secured to the quadrant and projecting forwardly in said slot, and adapted to rise above said slot and turn the log.

2. In a log-turner, a frame, a rack movable therein, a swinging toothed quadrant having a turning-shoe, and means for disengaging said quadrant from the rack.

3. In a log-turner, a frame, a rack movable therein, standards adjustable longitudinally on said frame, a swinging toothed quadrant having a turning-shoe, and means for locking said standards to and releasing them from the frame.

4. In a log-turner, a frame, a rack movable therein, standards movable longitudinally in said frame, a shaft in said standards, a swinging toothed quadrant suspended from said shaft, means forlocking said standards to and disengaging them from the frame, and means for preventing the swing of the quadrant in either direction.

5. In a log-turner, a frame, a structure sliding in guides in said frame, a toothed quadrant, having a turning-shoe, and suspended in said structure, means for locking the said structure to the frame, a sliding rack, and means for disengaging, first, the structure from the frame and subsequently the quadrant from the rack.

6. In a log turner, a frame having a ratchet-surface, standards movable in guides in said frame, a rock-shaft j ournaled in said standards, a dog on said shaft adapted to engage said ratchet-surface and lock the standards and a cam secured to said shaft; whereby the turning of said shaft in opposite directions will engage said dog with and disengage it from said ratchet-surface.

7. In a log-turner, a frame having guides .and adjacent ratchet-surfaces; a structure comprising standards movable in said guides; a rock-shaft mounted in said standards and having differential eccentrics; a dog suspended from one of said eccentrics and adapted to engage said ratchet-surface; a toothed quadrant suspended from one of said eccentrics, a movable rack with which said quadrant en gages, and means for turning said rock-shaft whereby said dog can be released, leaving the quadrant in engagement, and said quadrant subsequently disengaged.

8. In a log turner, a frame, standards guided therein, means for locking said standards to and releasing them from the frame, a swinging toothed quadrant, a rack with which said quadrant engages, and means for raising and unlocking said locking means without disengaging the quadrant.

9. In a log turner, a frame, standards guided therein and having stops, a swinging quadrant having corresponding stops, a movable rack with which said quadrant engages, and means for raising the quadrant and thereby engaging said stops, so as to lock the quadrant to said standards.

10. In a log-turner, a frame, standards guided therein, a toothed quadrant mounted in said standards and swinging between them, a log-turning shoe carried by said quadrant, and a yoke secured to both standards and serving both as a brace for the same and as a stop for said quadrant.

In testimony whereof I have affixed my signature, in presence of two witnesses, this 7th day of March, 1905.

SAMUEL J. BENS.

WVitnesses:

L. W. SEELY, M. R. SEELY. 

